2022-10-27 Ordinary Meeting Minutes

ORDINARY MEETING MINUTES   27 OCTOBER 2022




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ORDINARY MEETING MINUTES                                                               27 OCTOBER 2022

                Delegation to Noosa Shire Council — Coastal Reserve Encroachment
                27 October 2022
                     ———                 Role of dune vegetation
                   Taller shrubs and trees further
                    elevate the wind and provide
                    protection for inland plants, Secondary vegetation
                                                 Shrubs and small trees heip
                                                 to stabilise the foredune and
                                                 deflect the wind up and over
                                                the foredune.
                                                             Primary vegetation
                                                              coonselowerpasot AS Wind is
                                                              neuaneirese    deflected over
                                                                             the vegetation,
                                                                             sand is trapped
                                                                             on incipient or
                                                                             front dune.

                Figure 1: Role of dune vegetation [adapted from DLWC (2001)]

                Threats that dune vegetation cannot tolerate include:
                   =  dumping of organic and inorganic refuse, which smothers existing
                      vegetation and prevents natural regeneration, as well as potentially
                      impacting nutrient load
                   5	1	1	3	1	2	643	1769	297	40	91	mismanagement
5	1	1	3	1	3	965	1772	64	31	96	and
5	1	1	3	1	4	1057	1772	207	41	95	landscaping
5	1	1	3	1	5	1288	1776	169	37	96	activities,
5	1	1	3	1	6	1483	1776	78	32	96	such
5	1	1	3	1	7	1588	1785	37	23	96	as
5	1	1	3	1	8	1652	1779	140	38	96	mowing
5	1	1	3	1	9	1816	1787	36	23	93	as
5	1	1	3	1	10	1877	1779	68	31	93	this
4	1	1	3	2	0	642	1822	1156	47	-1	
5	1	1	3	2	1	642	1822	150	40	96	destroys
5	1	1	3	2	2	805	1827	227	38	96	regenerating
5	1	1	3	2	3	1043	1826	108	39	96	plants
5	1	1	3	2	4	1163	1827	63	32	96	and
5	1	1	3	2	5	1239	1829	192	39	96	potentially
5	1	1	3	2	6	1442	1830	137	39	96	spreads
5	1	1	3	2	7	1590	1831	97	32	96	weed
5	1	1	3	2	8	1699	1832	99	32	96	seeds
3	1	1	4	0	0	587	1894	1361	103	-1	
4	1	1	4	1	0	587	1894	1361	48	-1	
5	1	1	4	1	1	587	1900	15	14	48

                      topsoiling, as it prevents free drainage, is unsuitable for the growth of
                      natural dune species and potentially introduces pathogens
                   =  excessive fertilisation as this can be toxic to some dune species,
                      encourage the establishment of weeds, impact soil biota, and result in
                      possible eutrophication of swales that support important hydrophilic
                      species
                   *  introduction of unsuitable plants species, which disrupt and displace
                      natural vegetation [as an example of the impacts of colonisation of Broad-
                      leaved Pepper Tree (*Schinus terebinthifolius) into historically disturbed
                      dunes and swales refer to Attachment A]
                   *  establishment of turf, which does not have the ability to trap wind-blown
                      sand and cannot withstand burial or excessive salt spray, and when
                      stressed the turf will die, leaving bare sand, which is prone to wind erosion
                      and potential blowouts.

               HBA                                                                         2

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